M4 Yamaha YZF-R1 15-25 Stainless Catalytic Converter Eliminator

I am running this link pipe with the factory slip-on. It will not throw a CEL, I installed it with a servo delete. It does pop a lot when off the throttle so I will need a tune or power commander. The sound of the cross plane engine is amazing and this cat delete will amplify the sound.

I am very pleased with the look and sound of my bike after installing this pipe. I am still running the OEM muffler and the bike is super loud. I probably will buy an aftermarket muffler at some point to try and quiet it down a little, but definitely happy with it. I placed my order on the phone and customer service was awesome and shipping was fast too.

This clearly takes off all restriction on the bike. At first I had the A&R motorsports baffle kit on the stock canister with this mid pipe and it was way too loud, sounded like straight pipe. Reinstalled the stock unmodified canister and it sounds perfect now. Gotta get it tuned though because there are a lot de pops when downshifting. Don’t forget the skutrnet servo buddy when taking off the exhup valve. But if you don’t care about the weight you can just take the cables off but keep the valve « controller » under your seat. By doing that you don’t need the skutrnet servi buddy. (2016 R1S)

Very easy to install and the black looks really nice. I have to second one of the other reviews because I bought it all together, buy your fender eliminator, cat delete and servo buddy all together. I thank you guys for the great videos.

Unless you want to spend $800+ this might be the best option. Loud but not obnoxious. Make sure you order the servo buddy and fender eliminator at the same time. Save yourself time and headache, just get in and out of the tail once. Super easy to install. Comes with anti-seize and all hardware. The stock pipe on these really aren't that bad, pretty light too.

Install was very easy. Pipe is put together very good. I would recommend this to anyone wanting to keep the stock can. Beautiful rumble, noticeable sound difference. I am protuned so the decel popping is deep and low. Great weight saving pipe. I recommend this to anyone.

Best link pipe for bolt on.. Saved me lots of money instead of buying th whole exhaust kit.. Now it's bolted on with my Sc Project exhaust and loving it.. I made the right choice on getting this pipe. Thanks STG!!!!

straight out this thing is loud(running with the stock silencer for now) fits very well and the black is of quality coating, that being said i like that you can now build upon this system with your choice of silencers. bike will definatly need to be flash as alot of popping on decel..

Why should we go for arrow or akrapovic if we can have the same perfomance with cheaper price. It really amazed me when I first ordered the M4 catalist eliminator exhaust, shipped very fast to my home in Tokyo, Japan. It's making sound just like a motoGP bike with of course horse power up just the same as others racing exhaust which cost 2-3 times more expensive.